Bac-tying machine



Sept. l, 1931. /v H. B, FoULDER BAG TYING MACHINE Filed Deo. 14. 1928 9 Sheets-Sheet l xNvENToR 6 M4...

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H. B. FOULDER BAG TYING MACHINE .Fi-'Led Dec. 14 192s 9 .Sheets-Sheet slwffffw'Mm @ATTORNEY Sept. 1*', 193k H. B. FOULDER 'Filed Dc. 14. 1928 BAG TYI NG MACHINE 9 sheets-sheet 5- 4+ 154 15J jW11 ITT! zal ZW M? Z13 ai Munn I; l .In i fr-1M INVENToR 1.7 la. au?.

Sept- 1, 1931. H. B. FOULDER BAG TYING MACHINE F1161 Dec. 14. lgz

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INVENTOR H. B. FOULDER BAG TYING MACHINE sept. 1, 193.1.`

Filed Dec. 14, 1928 9 Sheets-Sheet 5 NNN SHN Q INVENTOR ATroRNEY H. B.FQU| DER 1,821,506

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` BAG TYING MAGHNL` Filed Dec. 14. 192s e sheets-sheet e @mi r1| il; I l

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| N ia ge INVENTOR -k uw@ *LL-ATTORNEY SePtl, 1931- H. B. FouLDER BAG TYING MACHINE Fi1ed Dec. 14, 1928 9. Sheets-Sheet 7 r 41@ M uw f www SQ. uw W a L 4 T u l@ m r I ma. Z s www QQ Y ATTORNEY Sept. l, 1931. H. B. FouLDER 1,821,505

BAG TYI'NG MACHINE Filed Dec. 14, 192s` 9 sheets-sheet s INVENTOR f3 Maa., k7/L1 .14

ATTORNEY Sept. l, 1931.

H. B. FOULDERv BAG TYING MACHINE Filed Dec. `14, 1928 9 Sheets-Sheet 9I NNN QN NN INVENToR ZL? Zad@ BYXLM7-a @Ae M ATTORNEY N .NR uw Patented Sept. 1, 1931 hires stares HENRY B. FOULDER, 0F GLENBRGOK, CONNECTICUT BAG-TYING MACHINE Application filed December 14, 1928.` Serial No. 326,125.

This invention relates to bag tying machines, and more particularly relates to machines for fastening Wire-ties about the puckered necks of bags to tie their mouths closed.

Bag tying machines of the character to moved when it is desired to open the bag.

i Moreover the re uirements of the )lante in which these machines frcquently'are located are usually such that the machines are operated continuously to tie the greatest number of bags as quickly as possible. Otherwise ad- 'i To ditional equipment and labor may bey necessitated to tie the number of bags required per unit of time.

' Accordingly, it is of great advantage that such machines be able to tie a large number Y' ai of bags in a satisfactory manner in the shortest possible time, and be not apt'to break down or otherwise get out of order under the strain of continuous capacity operation.

In view of the fact that bag tying machines El; must stand rough and continuous usage, it is essentialthat they be sturdy, durable, and be not apt to break down. litl is also desirable that the machine require the least possible attention by the operator, sothat the operator i 'SP5 can apply hin'iself solely to feeding bags into the. machine to be tied. It is also desirable that the bags are so tied that there 'will be no raw ends of the wire so exposed that they will scratch or injure the persons gripping lo the bags in handlingthem or in unloosening the ties to open the-bags. It is further de` sirable that the ends 'of the ties are so Vformed and disposed that they form a convenient grip whereby a person may yuntWist the ties i5 to open the bags.

lt is also of advantage not to have the machine too bulky,'heavy or cumbersome.

Accordingly, the principal object of my invention is to provide a machine whereby an f increased number of bags may be tied securely per unit length of time, and preferably tied L" in such a Way that the ends of the ties are guarded and form gripsjvhereby the ties can be removed from the bags readily and easily.

A further object of thisinvention is tol pro- (55 vide a machine of the character referred to, which is sturdy and durable, and requires practically no attention from the operator other than the feeding of bags into the machine, and the maintenance of a supply of 160 Wire for the ties;

A further object of this invention is to provide a bag tying machine Which is substantially automatic in its operation, and one which is automatically started and Stopped 6,5 depending on the presence or absence of a bag to be tied.

Other objects of this invention will be in part obvious and in part pointed out hereinafter.

In accordance with this invention, the machine includes a turntable adapted to receive bags fed thereto either by the operator or by mechanical kfeeding means. Mechanism is associated With the turntable whereby the 75, turntable moves the bags engaged therewith successively into position to be tied by the machine and from tying position after being tied. Preferably, there is also a clutch actun ating mechanism adapted'to be engaged by -80 each bagv as itis carried through a certain arc by the turntable, whereby the machine is automatically started and stopped, depending ,upon Whether or not a bag is or is not present in the predetermined position to 85 actuate the clutch mechanism. The machine further includes means for periodically advancing a length-of WireA (tie length) from a spool for each bag brought, or about to be brought, into tying position by the turntable, i9 there being meansr to cut ofi' the tie length so advanced; for bending the ends of the tie length against the body of the Wire for protective and gripping purposes; means for 95' bending eachk straight tie length into U-shape; means for causing the U-shaped tie to embrace the bag neck; means for causing the ends of the tie to cross each other beyond Y`thebag neck; means for twisting the crossed 100 ends of the tie together to tighten and` fasten the tie about the bag neck; and means for ejectlng each tied bag from the turntable as trie next succeeding bag is being brought into position to be tied.

The machine also includes means whereby the eects above mentioned are coordinated into synchronous relationship with each other, many operations being effected simultaneously. For instance, during the removal of each tied bag and the simultaneous movement of the neXt bag into tying position,a length of wire is being prepared for application to and fasteningV about the neck of a bag as soon as the advancing bag arrives in position to be tied thereby. As will be brought out more clearly hereinafter, the capacity of the machine is increased considerably by such simultaneous activity of the various mechanisms of the machine, and I consider this one of the important features of my invention, since in machines heretofore used there has been no such simuitaneous operation, and with these prior machines the operation with respect to each bag has been completed before the operation has started with respect to a succeeding bag. On this account, my machine has greater capacity per unit of time than the machines heretofore known.

lviy invention according y consists in the features of construction, combinations of elements and arrangements of parts which will be more clearly described hereinafter and the scope of the application of which will be exemplified in the claims that follow.

In order that a clearer understanding of my invention may be had, attention is hereby directed to the accompanying drawings, forming a part of this application and illustrating certain embodiments of my invention, and in which Fig. lis a plan View of my improved bag tying machine, including the turntable;

Fig. 2 is a front view of the same p 3 is an enlarged sectional view thereof, and is taken on the line 3 3 of Fig. l.. In the stage of operation depicted in this vi w, a fresh length of wire'has been advanced. though still gripped by the advancing means, and is ready to be cut Yoff from the supply. The ends of this length of wire y are engaged by the end bending means, ready to be bent as soon as the length has been cut off and released by the advancing means.

rihe forming jaws, which bend the straight length of wire into U-shape, have just gripped 'the wire, ready yto pull it between the forming posts after the ends have been looped bythe end bending means. The tie twisting means have Just completed twisting a tie 'about a'bag neck, and have opened and retracted, and the turntable'l has started to remove the tied bag and to bring the next bag into position to be tied by the wire in process of preparation;

Fig. 4 is an enlarged sectional view of the same, and is taken on the line 4 4 of Fig. 3, the machine being in the same stage of operation;

Fig. 5 is an enlarged sectional view, and is taken on the line 5 5 of Fig. 4, the machine being in the same stage of operation;

Fig. 6 is an enlarged top view of the turntable with the cover plate removed to show the interior organization;

Fig. 7 is a sectional view of the same, and taken on the line 7 7 of Fig. 6;

Fig. 8 is an enlarged sectional view showing the twisting spindle, and is taken on the line 8 8 of Fig. l;

Fig. 9 is an isometric view of a portion of the tying machine, showing the tie bent into U-shape by the forming means after the ends of the wire have been looped and released by the end bending means;

Fig. l() is a plan view of a fragment of the machine, showing the position of certain of the parts just after the tie` has been placed about the neck of a bag and the ends of the tie crossed beyond the bag and about to be twisted by the tie twisting means;

Fig. 1l is a sectional view of the same, and is taken on the line l1 11 of Fig. l0;

Fig. 12 is au enlarged front view of a portion of the machine, certain parts being shown in section and others broken away to more ing the position of these parts when a fresh length of wire is about to be grasped and advanced by the wire advancing means;

Fig. 13 is a sectional view through the gripping jaw of the wire advancing means, and is taken on the line 13 13 of Fig. l2;

Fig. 14 is a plan view of a severed wire tie with its ends looped as it would appear if removed from the machine before it is bent into U-shape;

Fig. l5 is a plan view of the tie after being bent into U-shape by the forming means;

16 is a plan view of the tie as it appears after the twisting operation is completed; and

Y Fig. 17 is a perspective View of a puckered bag neck tied with one of these ties.

Similar reference characters refer to similar parts throughout the several views of the drawings. y

t is'believed that the embodiments of my invention asl exemplified by the drawings referred to above may be described most clearly, concisely and fully, by first separately describing the various mechanisms which are included in the machine, and then describing the coordination and synchronism of movement between the various mechanisms.

Accordingly, reference being had to the drawings, thevarious mechanisms now will be described separately under individual headings.

Bag movz'ng means The means for bringing bags sucessively into position to be tied and for removing each bag after it has been tied comprises, asvinost clearly shown in Figs. 1, 3, 6 and 7, a turntable including a circular plate 20 rotatably mounted on a framework or pedestal 2l. Plate 2O has a plurality of uniformly spaced notches 22 in its periphery and at'each notch carries a U-shaped block 23, which is notched at each side, as at 24, and has mounted on its top a member 25, which present-s` a U-shaped recess 26 open toward the periphery of the plate 20.

A cover plate 27 secured over the frame 2l, as by bolts 23, connues the plate 2O against upward displacement.

Means are provided for periodically rotating the turntable 2O for a distance corresponding to the distance between adjacent notches 22. its shown 6), the rotating means may comprise a disk 30 secured to the top of a shaft 3l and having a roller 32, which is adapted to engage successively in notches provided on the interior periphery of the plate 2O for approximately 180 degrees of revolution of the disk 30, and then to leave the notch and rotate out of engagement with plate 2O until it engages in the next recess 33 in the plateA 20. Shaft 3l is journaled in brackets 34 secured to or formed on the pedestal 2l, and is rotated by means of a beveled gear 35 secured to the end of the shaft mesh` ing with a beveled gear 36 secured to a hori Zontal shaft 37, which is j ournaled in brackets 3S secured to the pedestal 21, shaft 37 hava sprocket 40 secured to its end'. A chain 4l connects sprocket 4G with another sprocket 42 secured to a shaft 43, which is journale-:l in brackets 44 secured to the framework 45 of the machine see Fi A beveled gear 46 is secured te an end of shaft 43 (see Fig. l), which gear meshes with a beveled gear 47 secured to the main drive shaft 48 for the entire machine. Shaft 48 is adapted to be engaged and disengaged by means of a clutch `50 with a suitable source of power, repre-- sented by pulley wheel 5l. Y

Accordingly, it will be apparent tl at, so long as the clutch 50L isengaged, turntable plate 2O will be rotated periodically a predetermined extent. n

ln order to prevent the turntable from bein@ moved out of position except by the means just described, I provide a locking lever 52 which is adapted to engage in recesses 53 formed in the plate 2O between each two recesses Lever 52 is in the form of va bell crank lever which is pivoted on a stud 54 secured to a ledge 55 at the top of pedestal 2l. The periphery of disk 30 constitutes a cam surface which engages a roller 56 on lever 52, a certain portion 57 ofthe periphery of disk 30 being extended outwardly, so that when this portion of the peripheryrof disk 30 engages the cam roller 56, themovable end of lever 52 will be held outside of the recesses 53.V The roller 32 is so disposed on disk 30 relatively to the cam surface 57 that when the plate 20 is rotated by the roller 32, the locking lever 52 will be disengaged from the plate 20, and that when the roller 32 is out of engagement with the plate 20, the locking lever 52 willbe engaged in one. of the recesses 53 to prevent movement of the turntable out of properposition.

revolution of the` disk 30 `and shaft 3l, the turntable 20will beadvanced one notch, and will remain at rest a predetermined length of time between each advance, although the disk 30 rotates continuously.

' ,Wire feeding means The wire 60, with which the bags are tied, is obtained from any suitable spool,freel or coil. To engage the wire with the machine, its end is manually inserted through a passage 6l formed in a bracket 62 (see Fig. 4), which is supported on the table plate 63 of the machine, and through a passage provided therefor in a sleeve member 64, which is slidably disposed in the end of passageV 61. Sleeve 64 is adapted to be periodically retracted into the passage 6l and to be protruded therefrom by means of a rod 65 which is connected to the sleeve 64 by means of an arm 66 (Figs. l and 9). The opposite end of passage 6l is reduced in size, and a spring 67 in passage 62 tends to move the sleeve 64 into protruding position.

Entering into the reduced end of the passage 62 isa stationary gripping element L70 and an opposite coacting movable gripping element 7l, between which the wire60 eX- tends. Element 7l is in the form of a pin disposed in a perforation in the bracket 62 and has ahead 72. A spring 73 is disposed about the element 71 between the head and the bracket, whereby the element- 7 2 is held raised, so that the wire 60 is not gripped betweenthe elements except when the pin 7l is depressed.

ln the normal first position of the wire, its end is flush with the projecting end of the sleeve 64, as shown in Fig. 9. The gripping pin 7l is then depressed by means of a lever 74, which is pivoted on a stud carried on a bracket 75 supported on the table plate 63 of the machine. One end of lever 74 has an adjustable pin 76 which rests upon the top'of pin 7l, and the other end of lever r4 has a cam roller r77 which rides on the cam periphery 7S of a cam which is secured to `the main drive shaft 48 of the machine.

After the wire is gripped between the elements 70 and 7l sothat it cannot ,-bemove'd rearwardly in the passage 61, the sleeve 64'is moved into the passage 61V so as toileave an lnus it will be apparent that for every end of the Wire exposed (Fig. 12) for engagement by the means which will grasp this exposed end of the Wire and Will draw a certain length of Wire through and out of .the passage 61 and beyond the sleeve 64.

VThese Wire advancing means include a casting (see Fig. 13), to which is secured a stationary jaw 81 and a movable jaw 8 2 in the form of a pin seated in a perforation in the casting 80. Jaw 82 is normally held away from jaw 81 by means of a spring 83, which at one end engages a pin 84 secured to the jaw 82 and at its other end to a pin 85 secured to casting V80. Preferably,spring 82 is protected by being disposed in a recess 86 provided therefor inv casting 80.

Casting 80 is bolted to'an end of a rod or bar 87, Which is supported in a groove in a block 29, and frictionally confined in the groove for sliding movement by means of a shoe 39 Which is pressed upon the bar 8'? by a spring 49 confined for adjustment in a bracket or bridge member 107, as shown in Fig. 5.

rThe means for moving the av.'v 82 toward the aw 81 to grip the wire therebetween includes a member 90 pivoted to the casting 80, as at 91, member 90 having a shoulder 92 adapted to engage and depress the top of the jaw pin 82 when member 90 is pivcted in one direction and to release the jaw 82 to upward movement by spring 83 when the member 90 is pivoted in the opposite direction. rlfhe pivotal position of member 90 isV governed by means of a bar or rod 93, which (Figs. 1 and 2) is pivoted to one end of a lever 94, which at its other end is pivoted, as at 95, to a bracket 96 secured to the frame 45 of the machine. Lever 94 is slotted, as at 95, and in this slot, for sliding movement, is secured a member 97, which is also slidab-ly retained in grooves or tracks of a member 98 axially secured to a gear 100, Which is mounted on a shaft 101 journaled on bracket or frame 96. Gear meshes With a gear 102, which is secured to the' shaft 43, shaft 43, as aforesaid, being connected with the ina-in driving shaft 48 through beveled gears 46 and 47.

Thus it Will be apparent that, as the main drive shaft 48 rotates, lever 94 Will be oscillated back and forth, clement 97 acting in the nature of a crank pin.- As rod is moved forward, that is, to the right of one looking at Fig.,2, rod 93 Will first p'vot member 90 to press the jaw 82 toward 81 and cause the end of the Wire 60 protruding from sleeve 64 to be gripped therebetween, and on further movement of rod 93. the casting 80 will be moved away from the sleeve 64 todraw length of Wire out of and through the sleeve 64. Then, when rod 93 begins to move in the oppositedirection', member 90 will first be pivoted so as to release the aw element 82, thus releasing the gripV on the Wire, and then further movement of rod 93 will return thecasing 80Y to 'thepassagev 61,

With the jaw 82 open and ready to engage another end of the Wire protruding from sleeve 64. n

rllhe periodic retraction of sleeve 64 to expose an end of a fresh length of Wire is effected by means of an angle-shaped lever 59 (Figs. 4 and 12) which is pvoted on a bracket 69 secured to the table 63 and engages against a stop member 79 secured to rod 65, this lever being adapted to be pivoted when engaged by a roller 89 carried on the bar 87, as clearly shown in Figs. 4 and 12. Roller 89'is so located on bar 87 that the spring 67 in passage 61 Will hold the sleeve 64 in for- Ward position to coact with the cutting knife 103 at the proper time, and will be retracted to expose an end of another length of Wire when the Wire .advancing means have been returned to the passa-ge 61 to grasp the protrading end of the Wire.

Unit/ng o# means lV hen a predetermined length of Wire has lcen pulled through the sleeve 64 by the Wire feeding means, it is cut off close to this sleeve by a knife 103 (see Figs. 5 and 9), which is adjustably secured, as byV set screw 104, to a slide 105, which is reciprocated by means of a cam 106 coacting With a roller 108 carried on an extension 110 which is secured to the slide 105. Extension 110 is provided with a slot 111, through which extends the main drive shaft 48, cam 106 being secured to this shaft after revolution therewith. A .pring 112, secured at one end to the famc of the machine and at the other end to a pin 113 on extension 110, resiliently holds the roller 108 against the periphery of the cam 106. Cam 106 is circular, except for a projection 114, and when this projection passes by the roller 108, the cutter 103 is reciproated across the perforation in sleeve 64, through which the Wire extends, thereby cutting the Wire at the sleeve.

Y End Zoop/ng means As the Wire is being drawn out by the wire feeding means, tivo slotted studs 115 and 116 (Figs. 4, 9 and 12) rise to engage in their slots. lowered periodically by means of a cam 117 (Figs. 1 and-5) Which is secured to the main drive shaft 48 for rotation therewith, coacting WithV a roller 118 which is secured to a lever 120. Lever 120 is journaled for rotation on a shaft 121, Which is journaled in brackets 122 secured to the frame of the machine. The opposite end of lever 120 is connected by means of a pair of links 123 to a lever 124, which at its outer endsupports one end of a rod 125. Lever 124 is fastened on a shaft 126, which is journaled in brackets 127 secured to the frame of the machine. llod seats in annular grooves 128 formed in collars 130, which are secured to each of' These slotted studs are raised and f "ico the pins 131 and 132 which support the studs and 116. The opposite end of rod is engaged by the end of a lever 133-fas tened on rod 126, andis connected by means of a pair of links 134 to an arm 135 which is supported on shaft 121 for rotation thereon.

Forming pin 115 is carried eccentrically on a head 136, which is secured to the top of pin 131, and forming pin 116 is eccentrically supported on a head 137 secured to the top of pin 132. This arrangement is such that, when the pins 131 and 132 are rotated approximately 180 degrees while the ends of the wire 60 are engaged in their grooves, each pin will form a loop at the engaged end of the wire.

The forming pins 115 and 116 are not rotated to loop the ends of the wire until the wire has been released by the gripper of the wire advancing means and until it has been cut ofl' at the sleeve 64 from the main body of` the wire.

To rotate pins 115 and 116 at the proper time, I fasten on each pin 131 and 132 anr elongated gear 140 and 141, which are respectively in mesh with racks 142 and 143.: Each rack is confined in a suitable runway or slide and each is pivotally connected to a. lever 144 and 145, these levers being secured te shaft 121 for rotation therewith.

The reciprocation of slides 142 and 143 is effected by means of a cam 146 (Figs. 1 and 5) coacting with a roller 147 mounted on a lever 148, which is pivoted to a lever secured to the shaft 121. Lever `148 has a slot 149 through which entendsV the main driving shaft 48, and cam 146 is secured to this shaft for rotation therewith.

During the operation of the machine, the studs 115 and 116 will be raised by means of cam 117 and engage the wire. These pins will then be eccentrically rotated by means of cam 146 to form loops in the ends of the wire. The pins will then be lowered out of engagement with the wire and will then be rotated into initial position, ready to be raised into engagement with the next length of wire.

Wre bending means After the loops have been formed at the ends of the severed length of wire 60', this length is formed into U-shape, as illustrated in Fig. 15. To this end, two stationary posts 151 are mount-ed on the frame of the machine chine. Movable jaw 154 is pivoted on a pin 158 carried on jaw 153, and has a heel or tail portion 160, which is connected by means ofa link 161 to a pin 162, which is carried on a small lever 163 secured to a rod or shaft 164. Shaft 164 is journaled in brackets 165 secured to the slide 155, and has secured thereto oppositely extending lever arms 166 and 167, which are provided with pins 168 and 170.

Thus it will be seen that, when pin 176 is moved upwardly from the position shown in Figs. 9 and 11, the jaw 154 will be raised from the j aw 153, and that when the jaw is open, the raising of the pin 168 will movethe jaw 154 down upon the jaw Y153.

The slide' 155 is moved toward the posts 151 by means of a cam 171, which engages a roller 172 carried on the slide 155, and is moved away from the posts 151 by means of a cam 173, which coacts with a roller 174 secured to the slide 155. t rl'he closing of the jaws 153 `and 154 is effected when the jaws have been advanced by the cani 171 so far that the wirev60 ispositioned between them. This closing of the Jaws is accomplished by means of a lever 175, which is pivoted on the machine, as at 176, and which has a heel portion 177-so locatedlthat the pin 168 will be in alignment thereover when the jaws are in such forward position, ready `to grasp an advanced length of wire. Lever 175 is pivoted so as to move heel 177 upward into engagement with pin 168, and to move pin 168 upwardtoclese the jaws 153 and 154 upon the wire by means of a cam178 secured to the main drive shaft 48 for rotation therewith and coacting with a roller 180 secured to the lever 175. After the wire has been gripped in the aws 153 and 154, the slide 155 is retracted so that fthe wire will be bent into U-shape between the posts 151 (see Fig. 9). rThe slide 155 is then advanced (see Fig. 10) to Vposition this U- shaped wire about the neck of a bag positioned to be tied thereby and into engage` 7'- ment with the means for twisting the 3 tie about the bag neck.` f

In this position of the slide 155, the pin `17 O is disposed immediately above the heel 177 of lever 175, and at the proper time cam 178 operates to raise the heel portion 177finto engagement with pin and to raise this pin to open the jaws 153 and v154 to release the tie positioned, as aforesaid, about the neck of the bag to be tied. t

After the heel of lever has vbeen raised to move either pin 168 or 170, it immediately lowers so as not to interfere with these pins during intermediate reciprocation of the d,

slide 155. Y

Tz'e crossing means The U-shaped wire engaged in the jaws 153 and 154 is advanced by means of cam 171 and slide 155 so that the ends of the wire iso will move into opposite channels 26 of one of the members 23 which are secured to the turntable 20. The channels 26 are so f rmed that the ends of the wire will be caused to cross each other on the opposite side of the puckered bag neck held in the notch 22.

T@ twisting means The tie twisting means are mounted on the pedestal which supports the turntable (Figs. 3 and 7), and include a twisting spindle journaled in a formation 181 on the cover plate 27. The spindle is mounted for rotation and reciprocation, and has secured thereto a collar 182 having an annular slot 183', in the opposite sides of which are seated rollers or pins 184e which are mounted on the forked end of a lever 185, whichis secured to a shaft 186 rotatably journaled in the pedestal 21. A` lever 187 is secured to shaft 186 and has a roller 188 riding in a cam slot or groove 190 formed in a collar 191 secured to vertical yshaft 31.

An elongated gear 192 is secured to twisting spindle 180 and meshes with a sector gear 193, which is mounted on a shaft 1911 supported on the pedestal 21. Sector gear 193 is reciprocated to rotate the spindle by means of a cam 195 secured to shaft 37 for rotation therewith and engaging a roller 190 carried on a lever 197 rotatably secured to a shaft 198 supported on the pedestal 21, there being another lever 200 secured to shaft 198 and having a roller 201 riding on the cam surface of a cam 202 vwhich is secured to shaft 31 for rotation therewith. Cam 195 coacts with roller 196 to move sector gear 193 in one direction, and cam 202 coacts with roller 201 to reciprocate sector gear 193 in the opposite direction.

Adjustable means are provided on the end of the twisting spindle 180 to grip the crossed ends of each tie for twisting the tie about the bag neck and for releasing each tie after it has been twisted by the rotation of the twisting spindle 180. rthese grippingl means include a stationary jaw 203 formed at the outer end of a sleeve 204, which is threaded on the end. of the spindle 180. Coacting with the stationary j aw 203 is a jaw member 205, which is pivoted to the sleeve 204 by means of a pin 206. Jaw member 205 has a heel portion 207, which is connected by a pair of links 208 (Fig. 8) to a rod 210, which is slidably mounted in the tubular front portion of the shaft 180. The recessed collar 182 is secured to the end of rod 210 by means of a pin 211, which penetrates elongated slots 212 provided in the tubular portion of the shaft 180.

When the spindle-180 is in retracted position, the heel 207 rests upon an elevated surface or platform 213 provided within a bracket 214 which is secured to the cover plate 181. This platform 213 is so elevated that it will hold the jaw 205 open with respect to jaw 203. When the twisting spindle 180 is moved outwardly into tie engaging position, the heel 207 rides off the elevation 213 and in alignment over a recess 215 provided in the cover plate 181.

Thus it will be seen (see Figs. 8 and 11) that the spindle 180 will be moved forwardly with collar 182' until the heel 207 of the jaw 205 leaves the elevation 213, and when this occurs, the rod 210 will be moved forward with respect to the twisting spindle 180 to lower the heel 20.7 of the jaw 205 and to bring the jaw 205 against the jaw 203. On the reverse movement of the collar 182, the forward shoulder of the elevation 213 will cam the heel 207 of the jaw upwardly and open the jaws while the pin 211 travels to the rear end of the slots 212, and further rearwart movement of the collar 182 will draw the whole t iisting spindle rearwardly.

Automatic dri/Ue Preferably, means are provided whereby the activity of the machine is responsive to 'the presence or absence of a bag engaged with the turntable at a certain location with respect to the twisting spindle. As shown (see Fig. 1), these means may comprise a lever 216 secured to the top of a vertical shaft 217 journaled on the pedestal 21. An arm 218 on thc lower end of shaft 217 is connected by a link 219 to a bell crank lever 220, which is pivoted to the frame of the machine, as at 221, this lever 220 having a forked end 222, which engages in an annular recess of the movable member of the clutch 50. One end of lever 216 is positioned to be engaged by the bag neck puckered into the holding channels 23 of the turntable and to be moved inwardly of the turntable as each bag is moved by Vthe turntable through a certain arc. Such movement of the lever 216 by a bag neck will cause the clutch 50 to be engaged to comr plete the tying operation upon a bag .in the turntable channels preceding! the channel whichv contains the clutch actuating bag.

Bag nach compressing means 'to cam each bag out of the turntable as the turntable rotates the bag across this member. Having described the various mechanisms incorporated in the mach-ine and the actuating means therefor, the operation of the machine as a whole will now be described.

1t is understood that the operator usually puckers bag neck into each channel ofthe turntable as the turntable revolves.

1Whentlie tying of a bag has just been completed and the twisting spindle 180 has been withdrawn from the twisted tie and the turntable is about totake this tied bag from tying position, and about to move a new bag into position for tying, the relative position of the various parts of the machine will be depicted in Figs. 3 to 8, inclusive. lAt this time, a fresh length of wire, fully `advanced by the wire advancing means and just about to be released therefrom, and just about to be cut by the cutter 103, and engaged in the forming pins 115 and 116, which are just about to be rotated to form the loops inthe ends of the tie, is gripped between the jaws and 15a, which have just closed on the wire. At the same time, the turntable is in the act of moving a tied bag out of tying position and of bringing an untied bag into tying position.

Then', while the turntable continues its movement, the wire advancing means 80 rcleases its grip on the tie and begins it travel toward the sleeve G-i, while the cutter 103 cuts e z. off the tie at the sleeve till and the forming pins 115 and 11G turn to form loops in the end of the tie and-then descend out of engagement with the tie. As soon as the tie is released from the forming pins 115 and 116, the bending aws 153 and 154 are retracted to begin bending the wire into U-shape between the posts 151. The return of the advancing means and the retraction of the bending means are so timed that the gripper will just escape the bending jaws 153 and154 without striking against them.

lVhen the bending aws 153 and 154l have been retracted sufficiently to bend the tie into U-sliape, these jaws immediately advance to engage the ends of the tie into, the grooves of the bag holding channel of the turntable, which has now been placed in proper position by the turntable rotating mechanism. As before mentioned, these channels are so formed that the ends of the tie will be crossed behind the bag neck inthe channel in position to be engaged by the jaws of the twisting spindle 180, which now advances and closes on these tie ends and then turns to twist the tie tightly on the bag neck, and then releases the tie and retracts and rotates into initial position.

As soon as the tie has been engaged by the aws of the t\ isting spindle, the lever 17 5 pushes the pin 170 upwardly to open the bending jaws 153 and 154, and these jaws are immediately retracted out of the path of the wire advancing means, which have started to pull a fresh length of wire from the sleeve 64. However, before this, the gripping pins and 71 clamp upon the wire in the passage 61 and the sleeve 611 is retracted into the passage tok expose an end of the Wire, which is then gripped by the gripperof the wire advancing means. As soon as the exposed end of the wire has been gripped, gripping pin 71 raises to allow the wire advancing means to pull the wire through the passage G1 and the sleeve 64.

`While the wire is being advanced by the wire advancing means 80, the bending jaws 153 and 154, which remain open after releasing the tie a the bag neck, move forwardly to embrace the new length of wire. This for` ward movement of these jaws is sotimed that the jaws will not interfere withthe ad-v vancing movement of the gripper of the wire `:ulvancing means. As soon as the wire has been pulled out the full dieta-nce, lever V175 raises to raise the pin 168 and close the jaws 153 and 15a upon the wire. .Meanwhile the loop forming pins have been raised into engagement with the advanced wire. At this stage the condition of the machine is again the same as depicted in Figs. 1 to 8, inclusive.

As aforestated, the twisting of a wire about the bag neck by the twisting spindle, its, release from the twisting means, the removal of the tied bag from tying position, and the advancing of a new bag intotying position, occur simultaneously with the formation and preparation of another tie, the machine being ready to place the newly formed tie about the next bag neel; as soon as it is placed in tying position the turntable.

t is obvious from the above that, by reason of tlie'simultaneous activity of 'the several mechanisms of the machine, much time is saved and the capacity of the machine per unit length of time is greatly increased. Of course, the various drivino' cams could be of such size and contour that the synchronism of operation of the various mechanisms could be varied, as desired, under the exigencies of particular conditions.

It is also to be noted that my machine comprises practically no delicatel parts and includes very few springs. The parts are all sturdy and durable, while at the same time the machine is compact and well able to withstand the rough usage to which machines of this character are usually subjected in cement plants and other plants where machines of this character. are used mostly.

It is apparent that the machine is practically autcmatic, merely requiring the operator to feed the bags into engagement with the turntable.` Should the operator wish to start the machine manually, all he need do is to move lthe lever 216 manually inwardly of the turntable, thus throwing in the clutch 50.

`Above all, it has been found that by means of Vmy machine a greater number of bags may be tied per unit of time, and in a more efficient fashion, than with machines heretofore known, andY with less likelihood of the machines necessitating shutdown for adjustment and repair due either to speed of operation or rough and continued usage.

It will also.I be apparent that each bag will be securely tied, and that the ends of the ties are guarded so as not to scratch or pierce the hands oi persons handling or opening the bags, and further that the separated loops at the ends of the ties afford a grip whereby the tie may be untwisted readily and easily and removed to open the bags.

As many changes could be made in the above construction and as many' different embodiments ol the invention could be made without departing from the scope thereoi, it is intended that all matter herein described or shown in the accompanying drawings be interpreted as illustrative and not in a limiting sense. y

That l claim is l. In a bag tying machine of the character described, the combination in a single organization, oi' mechanism 'for cutting oii1 a length from a continuous wire and for 'forming loops in the ends of the severed length and for bending the length into U-shape, and means .for simultaneously moving a bag into position to be tied.

2. In a bag tying machine of the character described, the coml-)inat-ion in a single org-aniz-ation, of mechanism for forming loops in the ends of a length of wire and for bending the wire into Ur-shape, means for simu taneously moving a bag into position to be tied', and means for applying a U-shaped, loopended Wire to a bag so positioned, to tie the bag..

3. In a bag tying machine oi the character described, the combination in a single organization, of mechanism for cutting o a length from a continuous wire and for forming loops in the endsof the severed length and 'for bending the length into U-shape, means for simultaneously moving a bag into. position to be tied, and means for applying a U-shaped, loop-ended wire to a. bag so positioned, to tie the bag.

4. In. a bag tying machine of the character described?, in combination, mechanism for periodically advancing a continuous wire a predetermined extent, successively cutting oil the advanced lengths of wire and successively making individual ties from each severed length, means for moving' a bag into position to be tied during said operations, and means for placing a tie so formed' about the neck of a bag and twisting the ends of the tie together to tighten the tie thereon.

5. ln a bag tying machine of the character described, in combination, mechanism for periodically advancing a continuous wire a predetermined extent, successively cutting oli the advanced lengths of wire and successively making individual' U-shaped and loop-ended ties from each severed length, and means for moving a bag into position to be tied during said operations. Y

6. In a bag tying machine of the character described, in combination, intermittently moving means for successively moving bags into position to be tied and for holding each bag a predetermined length of time in said position, means for advancing a continuous wire and forming a U-shaped tie during each movement of a bag into position to be tied, and means for applying a U-shaped tie to and securing it upon each bag while in position to be tied..

7. ln a bag tying machine of the character described, in combination,r means for forming successive U-shaped wire ties from a continuons wire, means tor applying said wire ties successively to the necks of bags, means adapted to twist each tie upon the bag neck to which it. is applied, and means for intermittent-ly moving bags successively into position to have said tiesapplied thereto and for holding each bag for a time in such position, said means last mentioned being adapted to move each bag into said position while a tie is being `termed by the means first mentioned, and to. hold each bag in such position while a tie is applied to and twisted on the neck thereof.

8. In a bag tying machine of the character described, in combination, means for forming successive U'shaped wire ties with looped ends from a continuous wire, means for applying said wire ties successively to the necks of bags, mean-s adapted jlio-twist each tie upon the bag neck to which it is applied, and means for intermittently moving bags successively into position to have said ties applied thereto and for holding each bag for a time in such position, said means last mentioned being adapted to move each bag intosaid position whiley a tie is: being formed by the means first mentioned, and to hold each bag in such position while a tie is applied to and twisted on the neck thereof.

9. ln a bag tying machine of the character described, in combination, means for periodically cuttingsuccessive tie lengths from a continuous wire, means for advancing the wire a tie length after each length has been severed, means for bending each severed tie length into U-shape, means fory moving bags successively into position to be fastened with said tie lengths while a length of wire is being severed from the continuous wire and isf bent into U-shape, means for applying each U-shaped tie length about a bag neck positioned to be fastened, and means for fastening each tie length about the bag neck to which it is applied.

l0. ln a bag tying machine of the character described, in combi-nation, a movable bag holder adapted to-y 'receive the neck of the bag, mea-ns for periodically advancing a con- -tinuous4 wire a predetermined extent, means for sucessively-severing each advanced lengthl of wire, means for looping each yend of each severed length of wire upon itself, means or'bending each length of Wire intoU-shape, means for applying each U-shaped length of wire' about a bag neck in the holder, means for crossing the 'ends of each length of wire beyond the bag neck, means for twisting the ends of the lengtlrot wire together to bind it about the neck, and means'for moving the bag holder to place a bag engaged therewith into position to have a U-shaped length of wire applied thereto while a wire is being advanced, looped and bent.

il. In a bag tying machine of the characer described, in combination, means, including bending posts and wire gripping jaws movable relatively to said posts, for bending a straight length of wire into U-shape, and means for fastening the lll-shaped wire about the neck of a bag, to tie the bag.

l2. ln a bag tying machine of the character described,in combination, a bag holder, means for bending a straight length of Wire into lds-shape at a distance from said holder, means lor applying a U-shaped wire tie to the neck of the in said holder, and means for twisting an applied U-shaped tie to fasten it about the bag neck.

153. in bag tying machine of the charac-A ter described, in combination, a bag holder, means, including a pair of reciprocating jaws adapted to grasp a U-shaped tie at its base and to move the tie endwise across opposite f-z' .es oi the neck of a bag in said holder, lor applyingthe tie to the neck of a bag in said holder, and mea-ns for twisting an applied U-shaped tie to fasten it about the bag neck.

ln a bagT tying machine ot the character described, in combination, a bag holder, and means for bending a straight wire into `.L5-shape and applying it to the neck of a bag 'in the holder, said means including bendi 1g' posts and movable jaws adapted to grip a length of wire intermediate its ends and to reciprocate relatively to said posts and relatively to said bag holder.

l5. in a bag tying machine of the character described, in combination, a bag holder, bending posts, ineansfor positioning a wire across said posts, and means for gripping the wire intermediate said posts and for pulling the wire between the posts to bend the wire into U-shape and for advancing the U-shaped wire tothe bag holder and disposing opposite sides of the U-shaped wire across opposite sides of the neck of a bag in said holder.

16. ln a bag tying machine of the character described, in combination, a bag holder, bending posts, means for positioning'a wire across said posts, means for gripping the wire intermediate said posts and for pulling the wire between the posts to bend the wire into U-shaped wire, soapplicd, to tighten ita-bout li. in a bae t in@ machineoi the characlter described, in combination, a bag holder,

bending posts, means for positioning a Wire across' said posts, means for gripping the wire intermediate said` posts and for pulling the wire between the posts to bend the wire into U-shape and for advancing the U-shaped vfiie to the bag holder and disposing opposite sides of the tl-shaped wire across opposite sides of the neck of a bag in' said holder, means adapted to cause the'ends of the Wire to cross beyond the bag neck when so applied, and means for twisting the crossed ends oit the wire together to tighten the wire about the bag neck. l V

18. in a bag vtying machine of the characn ter described, in combination, a bag holder, bending posts, an adjustable wire gripper adapted to be reciprocatedy with respect to said bag holder and posts, means for advancing' said gripper to said posts, means for adjusting the gripper, when so advanced, to

grip a wire disposed across said posts, means f for retracting the gripper from said posts todraw the grippedwire between said'posts and to bend the wire into U-shape, means for advancing the gripper to the bag holder to apply the U-shaped'wire to the neck otl a bag in said holder, means for adjusting the gripper to release its grip onthe wire when so pplied, and means for retracting the gripper from the bag holder.

19. ln a bag tying machine of the character described, in combination, a bag holder, bending posts, an adjustable wire gripper adapted to be reciprocated with respect to said bag holder and posts, means for advancing said gripper to said posts, means for adjustingy the gripper, when so advanced, to grip a Wire disposed across said posts, means for retract-ing the `gripper from said vposts to draw the gripped wire between said posts and to bend-the wire intoy U-shape, means for advancing the gripper to the bag holder to apply the U-shaped wire to the neck of a bag in said holder, means for adjusting the gripper to release itsv grip on the wire when so applied, means for retracting theY gripper from the bag` holder, and means adapted to twist the ends of the applied wire together beyond the bag neck to fasten the wire thereon. l-

20.k ln a bag tying machine of the character described, in combination, an element having a passage through'which a continuous wire may be drawn, and means for drawing a lengthot wire through' said passage, said meansincluding an fadjustablewire gripper movable toward the passage and adapted to 0 ering the drawn out length of wire adjacent the end of said passage.

22. In a bag tying machine of the character described, in combination, an element Vhaving a passage through which a continuous wireV may b e drawn, means for drawing a length of wire through said passage, said means including an adjustable wire gripper movable toward the passage and adapted to grip wire protruding therefrom, and movable away from the passage to draw the gripped wire therefrom, and means for exposing the end of the wirein the passage for engagement by said gripper.

23. In a bag tying machine of the character described, in combination, a stationary element having a wire passage theretnrough, and a reciprocable element having an aligning wire passage therethrough, said reciprocable element being movable inwardly of the stationary element to uncover an extent of wire disposed in said passages.

24. In a bag tying machine of the character described, in combination, a stationary element having a wire passage therethrough, a reciprocable element having an aligning wirel passage therethrough, said reciprocable element being movable inwardly of the stationary element to uncover. an extent of wire disposed in said passages, and means adapted i? to engage the uncovered extent of wire and topull a length thereof through and out of said. passages.

25.` In a bag tying machine of the character described, in combination, a stationary element having a wire passage therethrough, a reciprocable element` having an aligning wire passage therethrough, said reciprocable element being movable inwardly of the stationary element to uncover an extent of wire disposed in said passages, and means for preventing movement of the wire inwardly of the passage as the reciprocating element moves inwardly of the stationary element.

26. In a bag tying machine of the character described, in combination, two members having aligning wire passages adapted to be relatively extended and collapsed, means for cutting oif at one end of one of said members, when extended, wire protruding therefrom, and means for collapsing said membersto uncover the cut end of the wire in said passages.

27. In a bag tying machine of the character described, in combination, two members having aligning wire passages adapted to be relatively extended and collapsed, means for cutting off at one end of one of said members, when extended, wire protruding there.- from, means for collapsing said members to uncover the cut end of the wire in said passages, and means adapted to engage the uncovered cut end of the wire and to pull a lengt-h thereof through and out of the passages.

28. In a bag tying machine of the character described, in combination, a stationary element having a wire passage, a member having an aligning wire passage and adapted to be extended from and collapsed toward the stationary element, a wire cutter adapted to slide across the end of said member when projected to cut off wire protruding from the wire passage, and means for collapsing said member over the wire in the wire passage to expose an end thereof. n

29. In a bag tying machine of the character described, in combination, a stationary element having a wire passage, a member having an aligning wire passage and adapted to be extended from and collapsed toward the stationary element, a wire cutter adapted to slide across the end of said member when projected to cut olf wire protruding from the wire passage, means for collapsing said member over the wire in the wire passage to expose an end thereof and means adapted to engage the exposed end of the wire and to pull a length thereof through and out of said passages.

30. In a bag tying machine of the character described, in combination, a forming stud having a wire receiving slot, means for holding the end portion of a wire in alignment over said slot, means for raising said stud into engagement with said wire, and means for rotating said stud to form a loop in the engaged wire.

3l. In a bag tying machine of the character described, in combination, a pair of forming studs, each having a wire receiving slot, means for holding the. opposite end portions of a length of wire in alignmentover said slots, means for raising said studs into engagement with the opposite end portions of said wire, and means for rotating said studs to form loops of the. engaged end portions of the Wire.

32. In a` bag tying machine of the character described, in combination, a turntable adapted to receive and hold bags to be tied. and means for intermittently rotating said turntable a predetermined extent, said means including a rotating disk having an eccentrically positioned pin adapted to engage the turntable during a certain arc of revolution of the diskto advance the turntable, and being out of engagement with the turntable uiing the remaining arc of revolution of the 33. In a bag tying machine of the character described, in combination, a turntable adapted to receive and hold bags to be tied, and means for intermittently rotating said j `turntable a predetermined extent, said means including a rotating disk having an eccentrically positioned pin adapted to engage the turntable during a certain arc of revolution of the disk to advance the turntable, and being out of engagement With the turntable during the remaining arc of revolution of the disk, said turntable having a number of slots adapted to be engaged successively by said pin during continued revolution ofsaid disk.

34. In a bag tying machine of the charac-v ter described, in combination, a turntable adapted to receive and hold bags to be tied, means for intermittently rotating said turntable a predetermined extent, said means including a rotating disk Y having anA eccentrically positioned pin adapted to engage the turntable during a certain arc of revolution of the disk to advance the turntable, and being out of engagement with the turntable during the remaining arc of revolution of the disk, and means, including a movable locking lever adapted to engage the turntable, for locking the turntable against movement While said pin is out of engagement With the turntable.

35. In a bag tying machine of the characing the remaining arc of revolution of the disk, means, including a movable locking lever' adapted to engage the turntable, for locking the turntable against movement While said pin is out of engagement with the turntable, and a rotatable shaft for driving said disk and moving said locking lever in predetermined synchronism.

36. In a bag tying machine of the character described, in combination, a turntable adapted to receive and hold bags to be tied,

means for intermittently rotating said turntable a predetermined extent, said means including a rotating disk having an eccentrically positioned pin adapted to engage the turntable during a certain are of revolution of the disk to advance the turntable, and being out of engagement with the turntable during the remaining arc of revolution of the disk, means, including a movable locking lever adapted to engage the turntable, for

locking the turntable against movement While said pin is out of engagement with the turntable, a rotatable shaft for driving said disk and moving said locking lever in predetermined synchronism, and means, responsive tov the presence of a bag in a predetermined relative position in the turntable, for rotating said shaft.

37. In a bag tying machine of the character described, in combination, a turntable adapted to receive and hold bags to be tied, a twisting spindle associated With said .turntable, a rotatable shaft for intermittently rotating said turntable and intermittently operating the twisting spindle in predetermined synchronism, and means, responsive to the presence of a bag in a predetermined relative position in the turntable, for rot-ating said shaft.

38. In a bag tying machine of the character described, in combination, a turntable adapted to receive and hold bags to be tied, means for lintermittently rotating said turntable a predetermined extent, means for-locking said turntable against movement at intermediate times, tie twisting means associated With said turntable, a rotatable shaft for actuating all of said means in predetermined synchronism, and means, responsive to the presence of a bag in a predetermined relative position ,in the turntable, for rotating said shaft.'

39. In a bag tying machine of the character described, wire advancing means, including, in combination, a bodily movable carrier, a gripper on the carrier adjustable into and out of Wire gripping condition, and means, including a member movably mounted on the carrier, for adjusting the gripper.

40. Ina bagV tying machine ofthe character described, Wire advancing means, including, in combination, a bodily movable carrier, a gripper on the carrier adjustable into and out of Wire gripping condition, and means, including a member movably mounted on the carrier, for adjusting the gripper and for moving the carrier bodily.

4l. In a bag tying machine of the character described, Wire advancing means, including a movable carrier, a gripper on the carrier adjustable into and out of Wire gripping condition, andfmeans adapted to be moved in`one direction to first adjust the gripper into tie gripping condition and then to move the carrier bodily in one direction, and adapted to be moved in the opposite direction to first adjust the gripper outof Wire gripping condition and then to move the carrier bodily in another direction.

42. Ina bag tying machine of the character described, Wire advancing means, including a movable carrier, a gripper on the carrier adjustable into and out of Wire gripping condition, and means adapted to be moved in one direction to first adjust the gripper into en e 

